Design: Features two openings, often with adjustable concentric rings to fit different sized beakers or flasks, and a cover to prevent evaporation.
Construction: Typically made with a 304 stainless steel, corrosion-resistant, and, in some models, a seamless, one-piece inner tank to prevent leaks.
Temperature Range: Generally operates from room temperature up to 100°C, with a typical stability of around $\pm$0.5°C to $\pm$0.1 K.
Control & Safety: Digital displays, timers (often up to 9999 minutes), and safety features like overheat alarms.